Question

which variable are you trying to solve for in the following problem? justin tyme accelerates his race car uniformly from 20.0 m/s to 50.0 m/s in 3.00 seconds. determine the acceleration of the car. v0x vfx ax δt δx

Explanation:

Step1: Analyze each variable

• \(v_{0x}\) is the initial velocity. Here the initial velocity is given as \(20.0\ m/s\), so we are not solving for it.
• \(v_{fx}\) is the final velocity. Here the final velocity is given as \(50.0\ m/s\), so we are not solving for it.
• \(a_x\) is the acceleration. The problem asks to “determine the acceleration of the car”, so this is the variable we are solving for.
• \(\Delta t\) is the time interval. Here \(\Delta t = 3.00\ s\) is given, so we are not solving for it.
• \(\Delta x\) is the displacement. The problem does not ask about displacement, so we are not solving for it.

Answer:

ax